Armchair



FIG. 1 is a perspective view of an armchair;

FIG. 2 is a front plan view of the armchair of FIG. 1;

FIG. 3 is a right side view of the armchair of FIG. 1;

FIG. 4 is a left side view of the armchair of FIG. 1;

FIG. 5 is a back view of the armchair of FIG. 1;

FIG. 6 is a top view of the armchair of FIG. 1; and,

FIG. 7 is a bottom view of the armchair of FIG. 1.

The broken lines shown in the Figures are for the purpose of illustrating the article and form no part of the claimed design. 

The ornamental design for an armchair, as shown and described. 